docs: def fit(self, conver=DEFAULT_CONVERGENCE, minit=DEFAULT_MINIT,
              maxit=DEFAULT_MAXIT, fflag=DEFAULT_FFLAG, maxgerr=DEFAULT_MAXGERR,
              going_inwards=False):
          """
          Perform just a simple 1-pixel extraction at the current (x0, y0)
          position using bilinear interpolation.
  
          The input parameters are ignored, but included simple to match
          the calling signature of the parent class.
  
          Returns
          -------
          result : `~photutils.isophote.CentralEllipsePixel` instance
              The central pixel value.  For convenience, the
              `~photutils.isophote.CentralEllipsePixel` class inherits
              from the `~photutils.isophote.Isophote` class, although it's
              not really a true isophote but just a single intensity value
              at the central position.  Thus, most of its attributes are
              hardcoded to `None` or other default value when appropriate.
          """
  
          self._sample.update()
          return CentralPixel(self._sample)